Preheat the air fryer to 350°F while you prepare the apple pie bombs.

Cut each biscuit in half horizontally to create 16 thinner rounds and set them on a clean work surface.

In a small bowl, combine the diced apple pie filling, ground cinnamon, and 1 tsp of the apple pie spice, stirring until the apples are evenly coated.

Working with one biscuit piece at a time, gently flatten it in your hand into a 3 to 4 inch round.

Place about 1 tbsp of the apple filling mixture in the center of the flattened biscuit round.

Pull the edges of the dough up and over the filling and pinch firmly to seal all seams so no filling is exposed.

Roll the sealed dough gently between your hands to form a smooth ball and place it seam side down on a plate; repeat with the remaining dough and filling.

In a shallow bowl, stir together the granulated sugar and remaining 2 tsp apple pie spice.

Place the melted butter in a separate shallow bowl.

Dip each sealed dough ball into the melted butter, allowing the excess to drip off, then roll it in the sugar mixture until completely coated.

Arrange the coated apple pie bombs in a single layer in the preheated air fryer basket, leaving a little space between each for air circulation.

Air fry for 7 to 9 minutes at 350°F until the bombs are puffed and a deep golden brown, with slight bubbling at any small seams.

Carefully remove the apple pie bombs from the air fryer and let them cool on a rack or plate for at least 5 minutes before serving.